# Machine ignores "optimize Z moves" setting **URL:** \ **Category:** LightBurn Software Questions\ **Tags:** ruida, movable-z\ **Created:** [April 14, 2021, 8:40pm UTC](https://forum.lightburnsoftware.com/t/machine-ignores-optimize-z-moves-setting/38794 "2021-04-14T20:40:07Z")\ **Posts on this page:** 10\ **Page:** 1
**Author:** ![Bklynghost](https://forum.lightburnsoftware.com/letter_avatar_proxy/v4/letter/b/e274bd/32.png) [@Bklynghost](https://forum.lightburnsoftware.com/u/Bklynghost)\ **Post date:** [April 14, 2021, 8:40pm UTC](https://forum.lightburnsoftware.com/t/machine-ignores-optimize-z-moves-setting/38794/1 "2021-04-14T20:40:07Z")
Hey, y’all. Just installed a motorized Z with a focus sensor (pen style) and while everything is working great, the machine seems to ignore the optimize Z moves setting and goes to zero between each cut at different heights. I have tried turning on/off both optimize and relative moves for the Z, but nothing changes. Is this a bug, or am I missing something? I have a 6442S-B (EC) controller in that machine. ---
**Author:** ![Rick](https://forum.lightburnsoftware.com/user_avatar/forum.lightburnsoftware.com/rick/32/69_2.png) [@Rick](https://forum.lightburnsoftware.com/u/Rick)\ **Post date:** [April 14, 2021, 9:18pm UTC](https://forum.lightburnsoftware.com/t/machine-ignores-optimize-z-moves-setting/38794/2 "2021-04-14T21:18:31Z")
> [@Bklynghost](#): > > the machine seems to ignore the optimize Z moves setting and goes to zero between each cut > [@Bklynghost](#): > > Is this a bug Thank you for reporting these observations. When back in the shop, I will run some tests to see if I can reproduce, but have not seen this before. What version of LightBurn, and what OS are you using? ---
**Author:** ![Bklynghost](https://forum.lightburnsoftware.com/letter_avatar_proxy/v4/letter/b/e274bd/32.png) [@Bklynghost](https://forum.lightburnsoftware.com/u/Bklynghost)\ **Post date:** [April 14, 2021, 11:00pm UTC](https://forum.lightburnsoftware.com/t/machine-ignores-optimize-z-moves-setting/38794/3 "2021-04-14T23:00:08Z")
Hey, Rick The LB version is 0.9.23, I run it on a W10 pc (kept up to date). I used the current controller in a K40 with a Z bed without any problems. Now it is in a new 50W laser, I did update LB a couple of times before setting up the autofocus last night. ---
**Author:** ![Rick](https://forum.lightburnsoftware.com/user_avatar/forum.lightburnsoftware.com/rick/32/69_2.png) [@Rick](https://forum.lightburnsoftware.com/u/Rick)\ **Post date:** [April 14, 2021, 11:38pm UTC](https://forum.lightburnsoftware.com/t/machine-ignores-optimize-z-moves-setting/38794/4 "2021-04-14T23:38:26Z")
> [@Bklynghost](#): > > I used the current controller in a K40 with a Z bed without any problems. Now it is in a new 50W laser Sorry, but not following here. What is this “current controller”? Is this the stock M2 Nano board that came with the K40? What is “it”, that is “now in a new 50W laser”? Can you please rephrase this? ---
**Author:** ![Bklynghost](https://forum.lightburnsoftware.com/letter_avatar_proxy/v4/letter/b/e274bd/32.png) [@Bklynghost](https://forum.lightburnsoftware.com/u/Bklynghost)\ **Post date:** [April 15, 2021, 12:32am UTC](https://forum.lightburnsoftware.com/t/machine-ignores-optimize-z-moves-setting/38794/5 "2021-04-15T00:32:14Z")
Sorry, I’ve had this Ruida 644 controller in a K40 with a LightObject Z bed. About a month ago I’ve purchased a new 50w machine and replaced the knockoff controller that came with that laser with the official Ruida controller that I had in the K40. Basically this Ruida controller was in a k40 first and working properly, then I put it in the new machine. I ordered an autofocus kit with the new laser, but had to wait for some extra parts to come in, which took about a month. In that time one, or two LB updates rolled out, which makes me believe that it is a possible software bug. ---
**Author:** ![Rick](https://forum.lightburnsoftware.com/user_avatar/forum.lightburnsoftware.com/rick/32/69_2.png) [@Rick](https://forum.lightburnsoftware.com/u/Rick)\ **Post date:** [April 15, 2021, 12:41am UTC](https://forum.lightburnsoftware.com/t/machine-ignores-optimize-z-moves-setting/38794/6 "2021-04-15T00:41:08Z")
> [@Bklynghost](#): > > one, or two LB updates rolled out, which makes me believe that it is a possible software bug. You can help us test this theory 😉 , if you are willing, roll back to a version known to work for you previously and see if the issue is resolved. If so, that would be a strong indication of a bug. > [@How do I find older versions of LightBurn?](https://forum.lightburnsoftware.com/t/how-do-i-find-older-versions-of-lightburn/9104): > > All previous versions of LightBurn are available in our version archive, here: [https://github.com/LightBurnSoftware/deployment/releases](https://github.com/LightBurnSoftware/deployment/releases) ---
**Author:** ![Bklynghost](https://forum.lightburnsoftware.com/letter_avatar_proxy/v4/letter/b/e274bd/32.png) [@Bklynghost](https://forum.lightburnsoftware.com/u/Bklynghost)\ **Post date:** [April 15, 2021, 12:53am UTC](https://forum.lightburnsoftware.com/t/machine-ignores-optimize-z-moves-setting/38794/7 "2021-04-15T00:53:14Z")
Absolutely. Do I need to uninstall my current version, or can I just install it over just like an update? ---
**Author:** ![Rick](https://forum.lightburnsoftware.com/user_avatar/forum.lightburnsoftware.com/rick/32/69_2.png) [@Rick](https://forum.lightburnsoftware.com/u/Rick)\ **Post date:** [April 15, 2021, 12:56am UTC](https://forum.lightburnsoftware.com/t/machine-ignores-optimize-z-moves-setting/38794/8 "2021-04-15T00:56:22Z")
You should be safe, but… Personally, I would remove any possibility I might encounter an issue to know what my baseline test should return. ---
**Author:** ![Bklynghost](https://forum.lightburnsoftware.com/letter_avatar_proxy/v4/letter/b/e274bd/32.png) [@Bklynghost](https://forum.lightburnsoftware.com/u/Bklynghost)\ **Post date:** [April 15, 2021, 1:44am UTC](https://forum.lightburnsoftware.com/t/machine-ignores-optimize-z-moves-setting/38794/9 "2021-04-15T01:44:29Z")
So I’ve just installed a 9.21 version on my work Mac laptop and unfortunately the same thing is happening. Any idea why else this would be happening? I will try an even older version tomorrow on the Windows computer. ![Screen Shot 2021-04-14 at 9.40.02 PM](https://forum.lightburnsoftware.com/uploads/default/original/3X/5/b/5ba6d56887fb220749c81d8754cf3b0411af3919.png) ![Screen Shot 2021-04-14 at 9.41.44 PM](https://forum.lightburnsoftware.com/uploads/default/original/3X/8/6/86b6748d960dc9e7b78a4e5d3350023a3741e513.png) ---
**Author:** ![system](https://forum.lightburnsoftware.com/user_avatar/forum.lightburnsoftware.com/system/32/64335_2.png) [@system](https://forum.lightburnsoftware.com/u/system)\ **Post date:** [May 15, 2021, 1:45am UTC](https://forum.lightburnsoftware.com/t/machine-ignores-optimize-z-moves-setting/38794/10 "2021-05-15T01:45:02Z")
Closed on May 15, 2021, 1:45am UTC This topic was automatically closed 30 days after the last reply. New replies are no longer allowed.